01:119:115 Lecture Notes - Lecture 12: Metaphase, Mendelian Inheritance, Genetic Recombination
31 Oct 2016
School
Department
Course
Professor
Document Summary
There must have been a mechanism of inheritance this was unknown until 20th century. Darwin (1809-1882) didn"t know about genes and chromosomes. Gene- unit of hereditary information on a chromosome holds code to make a polypeptide. Allele- alternative version of a gene (exl brown hair within a gene. Genotype- what alleles are present in genetic make up. Allele-> trait-> brown hair: background of gregor mendel- austrian monk, put together rules of inheritance in eukaryotes, published his work and no one read it until the 19,000s father of modern genetics i. Experimental organism: garden pea plant: advantages of using this. It"s easy to grow a: common c, many varieties, easy to control pollination. Male: stamen- pollen, normally self pollinating but he removed the stamen and fertilized it himself. Female- carpel ii: applied quantitative methods, used experiments and documented each cross and recorded the traits and data. Developed true breeding lines- always express the same trait after self fertilizations.
